/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apereo.portal.events.aggr;

import java.util.HashMap;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/** Basic context impl */
class EventAggregationContextImpl implements EventAggregationContext {
    protected final Logger logger = LoggerFactory.getLogger(getClass());

    private final Map<Object, Object> attributes = new HashMap<Object, Object>();

    @Override
    public void setAttribute(Object key, Object value) {
        final Object old = this.attributes.put(key, value);
        if (old != null) {
            logger.warn("Replaced existing event aggr context for key={}", key);
        }
    }

    @Override
    public <T> T getAttribute(Object key) {
        return (T) attributes.get(key);
    }
}
